// Copyright 2004-2020 Castle Project - http://www.castleproject.org/
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

namespace Castle.Windsor.Extensions.DependencyInjection.Resolvers
{
	using System;
	using System.Reflection;

	using Castle.Core;
	using Castle.MicroKernel;
	using Castle.MicroKernel.Context;
	
	using Microsoft.Extensions.Options;

	internal class OptionsSubResolver : ISubDependencyResolver
	{
		private readonly IKernel kernel;

		public OptionsSubResolver(IKernel kernel)
		{
			this.kernel = kernel;
		}
		public bool CanResolve(CreationContext context, ISubDependencyResolver contextHandlerResolver, ComponentModel model, DependencyModel dependency)
		{
			return dependency.TargetType != null && 
				dependency.TargetType.GetTypeInfo().IsGenericType && 
				dependency.TargetType.GetGenericTypeDefinition() == typeof(IOptions<>);
		}

		public object Resolve(CreationContext context, ISubDependencyResolver contextHandlerResolver, ComponentModel model, DependencyModel dependency)
		{
			return kernel.Resolve(dependency.TargetType);
		}
	}
}